Internal-combustion engine.



s. YBARRA. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JAN. 26, 1912.

Patented July 29, 1913.

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To all 301mm it may concern.

l 3e 1t known that I, SAMUEL'YBARRA, a citlzen of the United States of America, and a resident of the city of St. Louis and Stateof Missouri,.have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a full, clear, and exact description, reference.

being had to the accompanying drawings, forming a part of this specification.

My invention relates to an explosive engine having a fluid cooled valve chambered for the reception of oil or other fluid. The

cooling fluid is preferably circulated through the valve, and if-the fluid utilized is a lubricant, it may also be utilized to Inbricat-e the valve and other parts of the engine.

Figure I is a. side elevation, partly insection, of an explosive engine embody' the features of my invention. Fig. II is s t liorir zontal section taken through the upper portion of the engine. Fig. III is a vertical section taken approximately on line -III- III, Fig. I. Fig. IV is a vertical section showing the upper portion of the engine.

- .Fig.'- V 1s a perspective view of the valve.

In the accompanyingdrawin :-.-A designates an explosive engine cylinder which may have a water jacket 1; A piston 2 is a connected to a crank 3 by a connecting rod inder head .15 which may be secured to the.

4. The crank 3 and crank shaft 5 are pref erably housed by a crank case 6.

The cylinder of my engine-has an inle port 7 and an exhaust port 8 which are con, trolled by a valve B, said'valve being preferably located in the head end of the cylinder so as to constitute an auxiliary cylinder head. The valve B may be rotated by any suitable means. For such purpose, I preferably employ a bevel gear 9 fixed to the crank shaft, a bevel gear 10 on a shaft 11.

and a pinion 12 also on the shaft 11 mesh mg with a gear 13.fixed to the valve stem 14. The valve stem 14 passes through a cylcylinderin any suitable manner.

cup

valve B is in the form of a having a cylindrical side wall 16 closely fitted to the inner wall of the engine The cylinder','.and a-bottom wall 17 serving with said si' all to produce a well W for the recepti oil'or other fluid. The valve is provided th a :passageway 18 'leadigg I Specification of Letters Patent. Application filedi'anuary as, 1012. ,Serial No. 073,557.

to register with and power strokes said passageway 18 refilis-- ters with a spark plug pocket 19, (Fig.

Patented July so, 1913. v

valve registers with the inlet port 7 during the suction stroke; during the compression and-when the piston is movlng on 1ts ex- Y haust stroke, the passageway 18 registers with theexhaust ort 8 As a valve of the type shown is subjected to a very high degree of heat during the op-' eration of the engine, it would soon war and become distorted so as to grind the cy inder and allow leakage, unless it is effectually cooled.- -I, therefore, circulate a fluid, preferably oil, through the well W in the valve that actsto' cool, and, at the same time, lubricate the valve and its'stem 14. The oil is delivered-to the cylinder head 15 through a pipe 20, and passes from said cylinder head through a duct 21 leading to the well W in the valve. A portion of the duct 21 is a .oovein the bore 22, through which the va ve stem 14 passes. The oilis delivered to the oil well W through the duct 21' at a point near the axis of the valve, and is discharged from said wellthrough a duct 23 formed in the cylinder head near the periphery of, the valve.

The upper edge of .as seen at 24 (Fig. V), to allow 011 to pass freely over the top edge of the valve and flow etween the valve and the. inner face of the cylinder, for the purpose of lubricating these opposing faces. The valve preferably carries closures 25 and 26 adapted to close the ducts 21 and 23 during the compression and power strokes of the engine to prevent leaka e of the fluidunde r pressure in the cylin er and also to prevent back pressure in the lubricatin' 'system.

The oil well. inthe valve B is supplied medium of pipes 20 and 27, the latter being connected to the cylinder head 15 at the i the valve is gr l .with oil-from the crank case 6 through the duct 23. The pipe 20 is preferabl connected to a pump P in the cran case while the pipe 27 may lead into the crank case at any desired point. The pump P is operated by an eccentric 28 aranged in the bifurcated end of a lever 29 to which the pump piston 30 is connected. The oil in the crank case enters an inlet port 31, (Fig. III), in the pump cylinder, and during the operation of the pump is forced .through the pipe 20 to the cylinder head from which it is forced through the duct 21 vto the valveoil well W. After circulating der to serve as an auxiliary head and open at the top to receive a lubricating or cooling fluid, and a cylinder head above the top of said valve.

2. An internal combustion engine comprising a cylinder having inlet and exhaust ports, a rotatable cup shaped valve closely fitted to the inner face of the cylinder, a cylinder head above said valve, "said valve being closed at the bottom to serve as an auxiliary cylinder head and open at the top to receive oil, and means for circulating oil through said valve.

3. An internal combustion engine comprising a cylinder having inlet and exhaust ports, a cu shaped valve in the head end of said cylin er for opening and closing one I of said ports, said valve being closed at the bottom andopen at the top, and a cylinder head fitted to the top face' of said valve and constituting a closure therefor, said cylinder head being provided with ducts for allo'yving fluid to flow into and out of the top of said valve.

4. An internal combustion engine comprising a cylinder having inlet and exhaust ports, a rotatable cup-shaped valve closely fitted to the inner face of said cylinder for opening and closing one of said port-s, said valve being closed at the bottom and open at the top to receive oil, a cylinder head closing the to of said valve, and means for circulating oi through said valve, the top edge of said valve being grooved to allow oil to escape from the valve and flow be-' tween the valve and the inner face of th cylinder.

5. An internal combustion engine comprising a cylinder provided with inlet and exhaust ports, a valve for controlling one of said ports, said valve being provided with a well, said cylinder having ducts for allowing fluid to pass into and out of said Well, and a closure carried by the valve adapted to close one of said ducts during the operation of the valve.

6. An internal combustion engine comprising a cylinder provided with inlet and exhaust ports, a valve for controlling one of said ports, said valve being provided with a' well said cylinder having ucts for allowing fluid to pass into and out of said well,

and fclosures carried by'the valve adapted to close said ducts during the operation of the-.valve.

SAMUEL YBARRA. In the presence" of" A. J. MCCAULEY, E. 

